Abstract

Background. Previous sleep studies
suggest that type 2 diabetes mellitus is
associated with poor quality of sleep and
sleep disorders.
Aim. To evaluate sleep parameters
and diurnal preference in type 2 diabetic
patients, using a questionnaire.
Methods. Ninety seven patients (aged
55.8±8.3, sex ratio 1:1), previously diagnosed
with type 2 diabetes mellitus, together with
102 controls (aged 47.1±10.5, sex ratio 1:1),
without diabetes, completed a questionnaire
containing the Romanian translation of the
Composite Scale of Morningness, the Sleep
Disorders Questionnaire, the Pittsburgh Sleep
Quality Index, the Pittsburgh Insomnia Rating
Scale, the Multidimensional Fatigue
Inventory, the Epworth Sleepiness Scale, the
Alcohol Use Disorders Identification Test and
the Beck Depression Inventory II (BDI). The
study was cross-sectional, as we included
subjects from outpatient and inpatient
facilities. The recruitment process was based
on handing invitation letters to patients
consulting their physician, as well as to their
acquaintances, using the snowball sampling.
Participation was voluntary and anonymous.